Tesla's truck will have a 200- to 300-mile range and have self-driving capabilities, Reuters reported.

Cause for delay

Tesla will use the extra three weeks to focus on Model 3 and battery production, Musk said.

Tesla only produced 260 Model 3 sedans in the third quarter, widely missing its original target to manufacture 1,500 sedans in September. It was a big miss for the most highly-anticipated car of the year, which secured 455,000 orders as of August.

The company will also use the extra time to focus on battery production for Puerto Rico.

Puerto Rico Governor Ricardo Rossello spoke with Musk on Friday about using Tesla's Powerpack batteries and solar panels to restore electricity to the island in the wake of Hurricane Maria. The Powerpack is Tesla's commercial battery and has already been used to power smaller islands like Ta'u in American Samoa